Pipe and tube coupling



` June 14 1.9325 -A..1.iNElxTl-uall-lEAD, J. Y 1,863,360-

l PIPE AND TUBE oorJPLING Filed June 13, 1930l m' mi u ATTO RN EY Patented June' Y14, 1932 y STATE' rrrn AND TUBE CoUPLINe Alipneation. med June is,

My invention relates to pipe and tube couplings, and the main is to provide a simp form of couplin for effecting a Huid-tight union between a ared s copper tube and a iexible hose or pipe. The coupling is also particularly constructed to i permitthe same to be easily and irmly attachedto a supporting wall or'frame, and to permit the flexible hose and iiared tube to be le connected with and supported by the opposite ends thereof on opposite sides of the wall or frame. As constructed the coupling also includes a single unitary seating member for both the iieXible hose, and flared tube, which member is an-independent piece orpart adapted to be removed and replaced within the coupling body. This seating member may be made of -diii'erent metal or material than the-body, and-one end thereof provides a relatively large dat abutting and sealing face for the hpse or pipe, whereas the opposite end is tapered or of frustro-'conical sha e and reduced in diameter to permit the ared end 'of a small copper tube to be united in sealing engagement therewith, all as hereinafter more fully described and also concisely set forth in the claims. V

In the accompanying drawing, Fig. lis a side-.elevation of a coupling constructed according to my invention, and Fig. 2 is a sectional view longitudinally thereof, including a'exible hose and a flared co per tube. Fig. 3 is a side view of the coup g nut for the ex'ible hose, and Fig. 4 is a sectional view of the coupling body and the coupling nut for the dared tube, and showin the separate seating and sealing member in e evation within the body.

The couplingcomprises a metal bod A having a screw-threaded extension 2 o reduced diameter at one end and forsmed with a shouldered enlargement 3 at its middle to permit this member to be fixed rigidly to a supporting wall Il by means of a nut 5. The larger end of body A is provided axially with ascrew-threaded opening or cavity 6 having a 'smoothly-finished inwardly-Ata ring loottom or seat 7 within the zone o hexagonal enlargement 3, andthe reduced extension 2 is also formed with'an axial opening 8 which purpose ci the invention 7 1930. Serial No. 460,836.

extends through the tapering bottom or seat lnternal-screw-threads 9 extend the full length of the opening 8 in extension 2, and these screw-threads are of reduced pitch and size compared with the screw-threads 10 in the 55 larger opening or cavity 6. Body A may be made of steel, brass, or any suitable metal adapted to be readily machined.

Having a coupling member or body A as described, a flexible hose B and a flared copper tube C may beA coupled together with luidtight sealing results by inserting a single seating and sealing member D for both these parts within the larger opening 6 preliminary to introducing the hose and the tube within @l5 the opposite ends of the body. Thus, member l) is a separate piece of metal, preferably brass or otherv non-corrodible metal, which is fashioned with .a fiat frusto-conical enlargement or head 11 and a reduced cylin- 7 drical shank or stemil2 is chamfered or beveled to provide a conical seat and sealing surface 13 against which) the Haring flanged end 14 of copper tube C may be tightly clamped by a tubular nut E. This nut is formed with a flaring mouth 15 corresponding to the angular bevel or 'chamferon the end of shank 12 of member D to permit a sealing union to be effected when member l) is moved inwardly or anchored or held a ainst axial movement outwardly within the arger recess or cavity 6 in body A.

Sealing member D is seured in a fixed position within body A when hose B is connect- .ed to the body, and for that purpose the hose 8E is provided with a tubular connecting nut F adapted to be introduced within the larger screw-threaded cavity 6. .A metal tube or nipple 16 fixed within the mouth of the hose has a disk-shaped enlar ent or ribbed flange-17' seated within the inner-end of nut F in abutting engagement with the. endv of thc-hose, and the ribbed Hange 17 is adapted to be pressed tightly against the annular flat surface of head 11 of member B when con- 95 necting nut F is screwed home within the 'cavi ity. c In so doing theconical side of head 11. may b e seated tightly against the inwardlytapering seat or bottom 7 within body A, depending upon the presence and position of the smaller nut yE within the smaller screwthreaded opening 8 in body A. That is, if the flared tube C and smaller nut E are not attached or in a definitely fixed position within the extension 2 of body A, the frusto-conical head l1 of sealing member D will be clamped tightl against the tapering bottom 17 when hose li, is attached to body A with its sealing nipple abutting tightly against the fiat side of head 11. But should the flared tube C be first coupled to body A by nut E and introduced say more deeply into extension 2, then head 1l may not be seated against the tapering bottom 17 but be spaced apart therefrom, all without lessening the final sealing effectiveness-of the device inasmuch as the larger nut F when screwed home will press the nipple tightly against head l1 and thereby force thc conical end 13 of the separate sealing member D tightly against the flaring flange of tube C, thereby clamping the flange with sealing results within the flaring mouth of nut E as well as sealing the end joint between hose B and the fiat head 11 of member D. Accordingly, should the hose or flared tube Vary in length in any given installation, or the connecting ends of the hose and tube be spaced differently Within the coupling body, a double union and seal may still be effected by the single sealing member D which is free to shift axially within the coupling body toaccommodate such variations, it being further understood lthat body A is or may be required to be fixed to wall 4 and in a stationary position when coupling connections are being made.` A

What I claim, is:

l. A pipeand tube coupling, comprising a coupling body having an axial passage with enlarged and reduced entrances at opposite ends thereof, a separate seating and sealing member of cylindrical form within said passage having enlarged and reduced end seats for effecting sealing unions with a pipe and a flaredtube respectively, said body and said sealing and seating member having co-acting seating faces, and means shiftably connected With said body to effect sealing engagement of said pipe and tube with said Seating and sealing member, the seating face of said seating and sealing member being axially shiftable itoward or away from the cro-acting seating face on said body.

2. A pipe and tube coupling, comprising a regardless of the relative position of said coacting seating faces.

3. A pipe and tube coupling, comprising a coupling ody having a screw-threaded cavity Vwithin one end and an axial opening of reduced diameter extendingthrough its opposite end to said cavity, a separate insert member axially shiftable with respect to the body and having an enlarged part confined Within the bottom of said cavity and a reduced part extending into said opening, co-acting seating faces on said enlarged part of said insert member and in the Wall of said screwthreaded cavity, and shiftable means coupled with said body for connecting a pipe and a flanged tube in sealing and clamping abutting engagement with the aforesaid enlarged and reduced part of said insert member, regardless of the position of said member in said axial opening of the coupling body.

1n testimony whereof I afiix my signature.

ALBERT J. WEATHERHEAD, Jn.

coupling body having an axial opening with enlarged and reduced screw-,threaded antrances at opposite ends thereof, a passaged member axially shiftable Within said opening having enlarged and reduced portions extending into the bottoms of said respective entrances, said body and said insert member having co-acting seating faces, and means for clamping a pipe and a fianged tube in sealing engagement with the enlarged and reduced portions respectively, of said insert member, 

